75 lines
1.9 KiB
Go
75 lines
1.9 KiB
Go
package model_classes
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import (
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"database/sql"
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"errors"
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. "git.andr3h3nriqu3s.com/andr3/fyp/logic/db_types"
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. "git.andr3h3nriqu3s.com/andr3/fyp/logic/utils"
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)
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type ModelClass struct {
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Id string `json:"id"`
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ModelId string `json:"model_id" db:"model_id"`
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Name string `json:"name"`
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Status int `json:"status"`
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}
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func ListClasses(c *Context, model_id string) (cls []*ModelClass, err error) {
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return GetDbMultitple[ModelClass](c, "model_classes where model_id=$1", model_id)
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}
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func ModelHasDataPoints(db *sql.DB, model_id string) (result bool, err error) {
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result = false
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rows, err := db.Query("select mdp.id from model_data_point as mdp join model_classes as mc on mc.id = mdp.class_id where mc.model_id = $1 limit 1;", model_id)
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if err != nil {
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return
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}
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defer rows.Close()
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return rows.Next(), nil
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}
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var ClassAlreadyExists = errors.New("Class aready exists")
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func CreateClass(db *sql.DB, model_id string, order int, name string) (id string, err error) {
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id = ""
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rows, err := db.Query("select id from model_classes where model_id=$1 and name=$2;", model_id, name)
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if err != nil {
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return
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}
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defer rows.Close()
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if rows.Next() {
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return id, ClassAlreadyExists
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}
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rows, err = db.Query("insert into model_classes (model_id, name, class_order) values ($1, $2, $3) returning id;", model_id, name, order)
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if err != nil {
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return
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}
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defer rows.Close()
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if !rows.Next() {
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return id, errors.New("Insert did not return anything")
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}
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err = rows.Scan(&id)
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return
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}
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func GetNumberOfWrongDataPoints(db *sql.DB, model_id string) (number int, err error) {
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number = 0
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rows, err := db.Query("select count(mdp.id) from model_data_point as mdp join model_classes as mc on mc.id = mdp.class_id where mc.model_id=$1 and mdp.status=-1;", model_id)
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if err != nil {
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return
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}
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defer rows.Close()
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// TODO not an error because if there is no result means that there is no need to count
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if !rows.Next() {
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return
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}
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err = rows.Scan(&number)
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return
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}
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